Mixing-machine.



J. G. HARDING.

MIXING MACHINE.

AP1LIOATION FILED APBHIQ, 1911v 1,009,304, Patented N0v.21, 1911.

COLUMBIA PLANOGRAPH 60.,WASMINOTON, D. c.

UNITED STATES PATENT OFFICE.

JAMES G. HARDING, OF IOWA CITY, IOWA.

MIXING-MACHINE.

To all whom 'it may concern:

Be it known that I, JAMEs G. HARDING, citizen of the United States,residing at Iowa. City, in the county of Johnson and State of Iowa, haveinvented certain new and useful Improvements in Mixing-Machines, ofwhich the following is a specification.

It is the object of the present invention to provide an improved machinefor mixing plaster, mortar, etc., and for the slaking of lime.

The primary aim of the invention is to provide a novel agitatingmechanism for such a mixing machine, the same being so constructed as tothoroughly mix the material and prevent accumulation of the material onthe walls of the body of the machine.

Another aim of the invention is to so construct the agitating mechanismthat it may be readily removed from the body of the machine and cleaned.

A further aim of the invention is to provide in agitating mechanism ofthis type, a novel arrangement of fixed agitator blades and movableblades, the latter being carried by a scraper blade forv the bottom ofthe body of the mixer, and the said scraper blade having at its outerend an upstanding scraper-blade arranged to remove the plastic materialfrom the sides of the body.

Another feature of the invention resides in the provision .of adischarge opening in the bottom of the body which may be opened topermit of the rapid discharge of the contents of the body into a trough,or the like, and a discharge opening in the side of the body throughwhich the contents of the body may be discharged into a bucket.

For a full understanding of the invention reference is to be had to thefollowing description and accompanying drawing, in which Figure 1 is avertical sectional view through the mixer embodying the presentinvent-ion. Fig. 2 is a horizontal section on the line 2-2 of Fig. 1.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the accompanying drawingby the same reference characters.

In the drawing the body of the machine is indicated by the numeral 1 andis preferably cylindrical and is closed at its lower end by a bottom 2.The bottom 2 is provided, centrally, with a bearing 3 for the lower endSpecification of Letters Patent.

Application filed April 19, 1911.

Patented Nov. 21,1911. Serial No. 622,088.

of a shaft 4 which, near its upper end is j ournaled in a bearing 5having radially extending arms 6. At theirouter ends, these arms 6 areprovided with clamps 7 which cooperate with the upper edge of the wallof the body to hold the bearing 5 in proper position. A bevel-gear 8 isfixed upon the shaft 4 near the upper end thereof and mesh ing with thisgear is a bevel-pinion 9 carried by a counter-shaft 10 on one of thearms 6. The shaft 10 may be operated by a belt and pulley, as shown inthe drawing, or may be driven by hand, depending upon the size of themachine.

Spaced pairs of studs 11 project from the upper edge of one of the arms6, and this arm supports the fixed blades of the agitating mechanism,each of these blades being in the form of a bar 12 bent at its upper endto a hook form as at 13 and engaged over the said arm 6 and confinedbetween a pair of the studs 11, these studs preventing sliding movementof the blades upon the said arm.

The blades are in this manner held in vertical position and spacedparallel with respect to each other. A scraper blade 14 is secured atits inner end to the shaft 4 at the lower end thereof and this blade isinclined at an angle of about 45 and has its lower edge resting upon thebottom 2 of the body of the machine. A scraper-blade 15 projects upwardly from the blade 14 at the outer end thereof and has one edgeresting against the side wall of the body from the bottom thereof to apoint near the top. Stirrer blades 16 are secured at their lower ends tothe rear side of the scraper-blade 14 and project upwardly in spacedparallel relation and are arranged to pass between the downwardlyprojecting blades 12, when the said shaft is rotated. Upon rotation ofthe shaft plastic material within the body will be agitated by thepassage of the blades 16 therethrough and the cooperation of theseblades with the blades 12, and the scraper-blades 14 and 15 will acteffectually to prevent the material from accumulating upon the bottomand sides of the body. It will be observed that the plates 12 terminateat their lower ends immediately above the plane of the scraperblade 14so that as the material scraped from the bottom of the body flows overthe upper edge of the said plate 14, it will be agitated by the saidlower ends of the blades 12.

The bottom 2 of the body is formed with a discharge opening 17, theopposite edges of journaled in bearings which converge toward the centerof the said bottom and terminate at the bearing 3. These edges areformed with flanges 18 slidably receiving the edge-portions of a closureplate 19 which may be slid into place to close the said opening whilematerial is being mixed, and may be removed to allow the mixed materialto flow from the body. When the material is to be discharged from thebody through the opening 17 the shaft 4 may be rotated to scrape all ofthe material from the sides of the body and from the bottom thereof andcause it to flow through said opening. In addition to the opening 17,there is provided a discharge spout 20 in the side of the bodyimmediately above the bottom and this spout may be opened when it isdesired to draw off a small quantity of the material.

Having thus described the invention what is claimed as new is 1. In amixing machine, a body, a shaft journaled in the body, blades dependinginto the body, a scraper-blade projecting from the shaft, ascraper-blade projecting upwardly from the first mentioned scraperblade,the first and last mentioned scraper blades being arranged to cooperatewith the bottom and the wall of the receptacle, respectively, andstirrer blades projecting upwardly from the first mentioned scraperbladeand arranged to cooperate with the first mentioned blades when the shaftis rotated.

2. In a mixing machine, a body, a shaft j ournaled in the body, bladesdepending into the body, a scraper-blade projecting from the shaft andinclined with respect to the bottom of the body and cooperatingtherewith, and stirrer blades projecting upwardly from the scraper-bladeand arranged to cooperate with the first mentioned blades when the shaftis rotated, the said first mentioned blades terminating at their lowerends immediately above the plane of the scraper blade.

3. I11 a mixing machine, a body, a support secured upon the body, abearing in the support, a shaft j ournaled in the bearing, fixed bladesdepending from the support into the body, a scraper-blade projectingfrom the shaft at its lower end and cooperating with the bottom of thebody, and stirrer blades projecting upwardly from the scraper-blade andarranged to cooperate with the first mentioned blades when the shaft isrotated, the said first mentioned blades terminating at their lower endsimmediately above the plane of the scraper blade.

4. In a mixing machine, a body, a support upon the body including anarm, spaced studs projecting from the arm, a blade comprising a barhaving its upper end bent over and detachably engaged with the armbetween the studs, a shaft journaled in the support, a member projectingfrom the shaft at the lower end thereof, and a stirrer blade projectingupwardly from the member and arranged to cooperate with the firstmentioned blade when the shaft is rotated.

5. In a mixing machine, a body, a support mounted upon the body andincluding an arm, spaced pairs of studs projecting from the arm, bladescomprising each a bar having a hooked upper end engaging over the armand between the studs of one of the pairs, a shaft journaled in thesupport, a member projecting laterally from the shaft at the lower endthereof, and stirrer blades project-ing upwardly from the said memberand arranged to cooperate with the first mentioned blades when the shaftis rotated.

In testimony whereof, I affix my signature in presence of two witnesses.

JAMES G. HARDING. [1"... s.]

Witnesses:

J. D. MILLER, LEE D. KOSER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

